38972111 has 2 divisors, whose sum is σ = 38972112. Its totient is φ = 38972110.

The previous prime is 38972093. The next prime is 38972117. The reversal of 38972111 is 11127983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38972111 - 2¹⁴ = 38955727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38972117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19486055 + 19486056.

It is an arithmetic number, because the mean of its divisors is an integer number (19486056).

Almost surely, 2^38972111 is an apocalyptic number.

38972111 is a deficient number, since it is larger than the sum of its proper divisors (1).

38972111 is an equidigital number, since it uses as much as digits as its factorization.

38972111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 32.

The square root of 38972111 is about 6242.7646920255. The cubic root of 38972111 is about 339.0402895586.

The spelling of 38972111 in words is "thirty-eight million, nine hundred seventy-two thousand, one hundred eleven".